Soundgarden are celebrating the 20th anniversary of their amazing album ‘Superunknown’ with deluxe editions that will feature previously-unreleased rehearsal recordings, demos and b-sides, with a vinyl version aalso available on June 3. The Seattle rockers have now commemorated the event by filming an episode of Guitar Center Sessions which you can watch below.

The newest episode of the DirectTV series was filmed at their hometown Seattle Guitar Center and features the guys talking about their roots and their journey to success, as well as playing some famous Superunknown riffs and talking shop about guitars. One interesting revelation that comes in the first 60 seconds of the Sessions episode is that all four band members — Chris Cornell, Kim Thayil, and even bassist Ben Shepherd and drummer Matt Cameron — were originally drawn to the guitar.

In the realm of retail, Soundgarden will release two deluxe editions of Superunknown, a 2-CD Deluxe Edition and a 5-CD Super Deluxe Edition and also a vinyl version.

Superunknown debuted at #1 the week it was released and remains Soundgarden’s highest-selling album, “Spoonman”, “Black Hole Sun”, “Fell On Black Days”, “My Wave” and “The Day I Tried To Live”, “Superunknown” all are on the album that debuted at No. 1 in the US and went on to sell more than 9 million copies worldwide, including 5 million in the States alone. “Black Hole Sun” and “Spoonman,” both won Grammys for the band.

Soundgarden filmed another episode of the show in Austin, Texas from the rooftop of the Starr Building. It was shot recently during SXSW and that show will premiere during the series’ upcoming eighth season, which kicks off in May.

The band is getting ready for their appearance on the Lollapalooza bill in Brazil on April 5, followed by a European tour that will include multiple dates and festivals with headliner Black Sabbath. That will be followed by the U.S. Summer tour with Nine Inch Nails, which kicks off July 19 in Las Vegas, Nevada and continues through August 25 at the Hollywood Bowl.

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